Caterpillar 3408 vs VMAN D15A1
The Caterpillar 3408 and VMAN D15A1 are both diesel generator engines in a similar power class. Both are rated at roughly 462 kVA. Displacement is 18 L versus 14.618 L. The table below compares their full specifications side by side.
| Specification | Caterpillar 3408 | VMAN D15A1 |
|---|---|---|
| Headline rating | 456 kVA | 468 kVA |
| Standby (50 Hz) | 365 kWe | 374 kWe |
| Prime (50 Hz) | 330 kWe | 329 kWe |
| Standby (60 Hz) | 440 kWe | — |
| Prime (60 Hz) | 400 kWe | — |
| Displacement | 18 L | 14.618 L |
| Configuration | V8 | V8 |
| Cylinders | 8 | 8 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | Unregulated |
| Dry weight | — | — |
| Origin | United States | China |
Choosing between Caterpillar 3408 and VMAN D15A1
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The VMAN D15A1 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.